{-# LANGUAGE NamedFieldPuns #-}

module Skat where

import Control.Monad.State
import Control.Monad.Reader
import Data.List

import Card
import Pile
import Player

data SkatEnv = SkatEnv { piles :: Piles
                       , turnColour :: Maybe Colour
                       , trumpColour :: Colour
                       , players :: Players }
               deriving Show

type Skat = StateT SkatEnv IO

modifyp :: (Piles -> Piles) -> Skat ()
modifyp f = modify g
    where g env@(SkatEnv {piles}) = env { piles = f piles}

getp :: (Piles -> a) -> Skat a
getp f = gets piles >>= return . f

setTurnColour :: Maybe Colour -> SkatEnv -> SkatEnv
setTurnColour col sk = sk { turnColour = col }